首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   732篇
  免费   77篇
  国内免费   2篇
耳鼻咽喉   8篇
儿科学   18篇
妇产科学   12篇
基础医学   92篇
口腔科学   14篇
临床医学   123篇
内科学   125篇
皮肤病学   46篇
神经病学   65篇
特种医学   19篇
外科学   102篇
综合类   14篇
一般理论   4篇
预防医学   40篇
眼科学   18篇
药学   67篇
中国医学   2篇
肿瘤学   42篇
  2024年   1篇
  2023年   9篇
  2022年   25篇
  2021年   41篇
  2020年   32篇
  2019年   39篇
  2018年   36篇
  2017年   24篇
  2016年   34篇
  2015年   32篇
  2014年   25篇
  2013年   41篇
  2012年   67篇
  2011年   54篇
  2010年   35篇
  2009年   27篇
  2008年   45篇
  2007年   34篇
  2006年   27篇
  2005年   42篇
  2004年   37篇
  2003年   29篇
  2002年   29篇
  2001年   8篇
  2000年   13篇
  1999年   6篇
  1997年   2篇
  1996年   2篇
  1995年   1篇
  1994年   2篇
  1993年   1篇
  1992年   2篇
  1991年   1篇
  1990年   1篇
  1982年   1篇
  1981年   3篇
  1978年   1篇
  1971年   1篇
  1970年   1篇
排序方式: 共有811条查询结果,搜索用时 15 毫秒
791.
Ekti Genc R  Conk Z 《Cancer nursing》2008,31(4):312-317
This experimental, randomized controlled study was conducted for children with cancer who are 7 to 12 years of age and receiving chemotherapy treatment to detect the impact of appropriate nursing interventions on decreasing the fatigue syndrome. The research sample is composed of a total of 60 children with cancer, with 30 children being included in the experimental group and 30 children included in the control group with their mothers. In the experimental group, after the 7th to 10th day of the chemotherapy treatment, throughout a week, the researcher conducted the effective nursing interventions every day for 45 to 60 minutes. In the control group, routine nursing interventions were carried out. The experimental and control group children's mean scores for the Fatigue Scale-Child and those of mothers for Fatigue Scale-Parent were compared. A statistically significant difference was found between the Fatigue Scale-Child and Fatigue Scale-Parent mean scores of the experimental and the control group children (P < .00). These results suggest that fatigue of children with cancer can be reduced by implementing appropriate nursing interventions.  相似文献   
792.
We developed two colorimetric methods for the detection of vancomycin- and oxacillin-resistant Staphylococcus aureus in 相似文献   
793.
794.
Background Generalized recessive dystrophic epidermolysis bullosa (RDEB) is often complicated by high nutritional difficulties with risks of malnutrition. Objectives To provide information regarding the benefits of enteral feeding by gastrostomy (GTF), energy and protein requirements, tolerance, growth and pubertal development in children with RDEB. Methods Twenty‐four patients were referred over a 7‐year period in a retrospective study. Gastrostomy placement was decided in patients unable to feed orally and/or presenting loss in weight and height of at least 1 SD compared with their best growth level, despite regular nutritional advice. Weight and height were expressed as Z‐scores. Catch‐up growth following GTF onset was studied. Results Gastrostomies were performed in 11 children (aged 9·0 ± 5·8 years), and one young man aged 18 years. The body weight Z‐score was ?2·3 ± 1·0, height Z‐score 1·1 ± 1·1, weight‐for‐height was 81 ± 11% and height‐for‐age 95 ± 4%. At onset, GTF provided 74 ± 21% and 180 ± 81% of the recommended dietary allowance (RDA) for energy and proteins, respectively. At study update (53 ± 20 months), GTF provided 91 ± 29% and 205 ± 100% of RDA for energy and proteins, respectively. Weight‐for‐height reached 92 ± 15% and height‐for‐age 98 ± 5%. A normal puberty was obtained when GT was performed before the age of 10 years. Skin was not improved. Conclusion Malnutrition was observed in 50% of the children with generalized RDEB. Protein and energy needs are particularly high. GTF is well tolerated and helps with catch‐up growth and puberty. It must be considered before malnutrition onset, and, if necessary, before puberty.  相似文献   
795.
A 74-year-old woman, taking anticoagulant therapy for chronic heart failure, presented to our emergency room with left dorsiflexion weakness 8 hours from after multitrauma. A detailed neurological examination revealed only 0/5 strength in the left foot dorsiflexion without any upper motor neuron signs. While there was no spinal cord pathology detected, cranial computed tomography demonstrated a lesion in the right parasagittal localization consistent with hemorrhagic contusion. Clinical follow-ups showed an improvement in neurological findings with muscle power of 3/5 in day 5 and 5/5 in day 45 of admission. The parasagittal region has a foot localization in the homonculus and lesions in this area can rarely present with the foot drop sign. Thus, parasagittal region lesions should always be kept in mind in foot drop cases.  相似文献   
796.
Dentigerous cysts are benign odontogenic cysts that are associated with the crowns of permanent teeth. They are usually characterized as unilocular radiolucent lesions and are rarely seen during childhood. The purpose of this article was to report the case of a 6-year-old girl with a dentigerous cyst associated with the tooth buds of premolars. The therapeutic approach included extraction of the primary molar involved and marsupialization of the lesion. After 21 months of follow-up, spontaneous eruptions of the impacted premolars were noticed. In conclusion, marsupialization might be the first treatment option for conservative management of dentigerous cysts in children.  相似文献   
797.
798.
799.
OBJECTIVE: To assess the impact of the disease stage and therapy on motor cortical excitability in Parkinson's disease (PD). METHODS: Twenty newly diagnosed and medication-free, early stage patients, 20 late stage patients under antiparkinsonian therapy and 20 normal healthy controls were included. Motor threshold (MT), amplitudes of motor evoked potential (MEP), motor evoked potential amplitude/compound muscle action potential amplitude (MEP/CMAP) ratio, central motor conduction time (CMCT) and cortical silent period (CSP) were measured by stimulation of the motor cortex using a 13.5 cm circular coil and recordings from abductor digiti minimi muscle. Following the first study protocol, early stage patients were given therapy and the same protocol was repeated three months later. RESULTS: Motor threshold was lower; and the MEP/CMAP ratio was higher in early and late stage patients than normals. In early stage patients after proper therapy, the MTs became higher than before therapy, but still remained lower than normals. In late stage patients, the CMCTs were shorter than the early stage patients before therapy and normals, but there was no difference between the early stage patients and normals. In early stage patients after therapy, the CMCT became longer than before therapy and this difference was significant in both late stage patients and normals. Although more prominent in late stage patients, the CSP duration in both PD groups was found shorter than normals. In early stage patients, after therapy, the CSP durations became significantly longer compared with before therapy. CONCLUSION: These findings suggest that the motor cortical excitability increases in PD because of the impairment of the corticomotoneuronal inhibitory system.  相似文献   
800.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号